Shuttle-driving mechanism.



No. 692,843.- Patented-Feb. n, 1902',-

' vW.C.FI`EE.

SHUTTLE DRIIVING MECHANISM. v (Application led. May B7, 1901.) (no Model.) u 1 v2 sheets-smeg l.

jf( ffii/am @Wma -d/fwm i sms Pcrsns 50,. PHomLrrfo., wAsHINYoN n c No. 692,343. Patented Fen. 151902.- v w.,c. rase.

4 SHUTTLE DRIVING MECHANISM.

Apphcation led. May 27. 1901 2 Sheets-Sheat 2.v

-(No Model.)

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, MYNN NITED STATES PATENT OFFicPE.

VILLIAM C. FREE, OF CHICAGO, ILLINOIS.

SHUTTLE-DRIVING NIECHANISIVI.

SPECIFICATION forming part of Letters Patent No. 692,843, dated February 11, 19012. Application mea May 27, 1901. seria No. 62,155'. (Nomad.)

T0 all whom t may concern.-

Be it known that I-,WILLIAM C.FREE, a citilzen of the United States of America, residing 'at Chicago, in the county of`Cook and State 'of Illinois, have invented certain new and useful Improvements in Shu ttle-Driving Mechanisms, of which the following is a specification.

This invention is additional to the improvements .iu Vshuttledriving mechanisms described and claimed in the specification forming part of my application, now pending and having Serial No. 62,154, for Letters Patent of the United States; and it consists in the introduction of a ball-bearing into the shuttle-driving mechanism therein shown and described.

Referring to the accompanying drawings, which form a part of this specification, Figure 1 is a bottom plan view of a'sewing-machine embodying my improvements. Fig. 2 is a section at the dotted line 2 2 in Fig. l of parts there shown. Fig. 3 is a side elevation of the shuttle-driving mechanism shown in Fig. 1. Fig. 4L is a section at the dotted line 4 4 in Fig. 3 of parts there shown. Fig. 5 is an elevation of the working face of the gimbal-ring and a cross-section of the drivingshaft ofthe shuttle-driving mechanism.

Like letters of reference indicate .corresponding parts throughout the several-views.`

A is the machine base-plate, which is provided with a hanger A and a downwardlyprojecting lug A2, having bearings AS and A4 therein to support the driving-shaft of the machine. t

B is an oscillatory-shuttle-carrier driver provided at its upper end with a transverselyprojecting arm B to support a shuttle-carrier and terminating at its lower vend in bifurcations B2, having transverse bearings B3 therein and mounted on a supporting-pivot B4, extending from the base-plate A longitudinally downward through a tubular bearing B5 therein. The upwardly-tapering bushing B, bushing-retaining screw B7, and set-screw B8 serve to retain the oscillat'ory-shuttle-carrier driver B on its supporting-pivot B4.

C is a gimbal-ring mounted, by means of trunnions C thereon, in bearings B3 in the shuttle-carrier driver B and having an annular race C2 sunk into the working face C3 thereof.

C4 represents, preferably, hardened-steel balls of suitable'diameter arranged, as here shownin a circle in the annular race C2 in the working face C3 of the gimbal-ring C, and taken collectively they constitute 'a ball-bearing interposed between such gimbal-ing C and a part to be described hereinafter.

' D is a driving-shaft passing through an opening C5 in the gimbal-ring C andmounted in the bearingsrA3 and A4 in the hanger A and lug A2, respectively. i

E is a collar fast to the driving-shaft D, having an inclined driving-face E thereon substantially parallel to and in contact with the ball-bearing O4, interposed between such collar E and the working face of the gimbalring C. l

Obviously the race C2 might be formed in the inclined face E in the collar E or partly in such collar E and partly in the gimbalring C; but a ball-bearingv interposed between the gimbal-ring C and inclined face E' on the collar E and retained therein in any manner would evidently be Within the spirit and scope of my invention. I therefore do not wish to be understood as intending to limit myself to the employment of av ballbearing between those parts of any particular form or construction. 1 g F is a shuttle-carrier of any desired form and construction secured to or integral with the shuttle-carrier-driver arm B.

G is a wrist-wheel fast to the driving-shaft `D and provided with a wrist-pin G.

H is an eccentric-rod connecting the Wristpin G of the wrist-wheel G with an eccentric (not shown) onthe main shaft (alsonot shown) Aof the machine.

The remaining unlettered parts shown in Fig-1 belong to the feeding mechanism of the machine and are fully shown and described inthe application mentioned in thesecond paragraph of this specification. Said unlettered parts need not be regarded in order to fully understand the invention herein described and' claimed. v

lEach rotation by the driving-shaft D of the collar E, acting upon and through the gimbalring C,will drive the shuttle-carrierE2 through a complete oscillation or back-and-forth movement, as indicated by the double arrow in Fig. 1.

What I claim as new, and desire to secure by Letters Patent, is-

l. In a sewing-machine, in combination, an oscillatory-shuttle-carrier driver, a gimbalring mounted in bearings therein, a shaft passing through the opening in the giinbalring, a collar-fast to the shaft-having an inclined face thereon substantially parallel to the adjacent face of the gimbal-ring, a ballbearing interposed between the inclined face of the collar and the adjacent face of the gimbal-ring, and means for driving said shaft, substantially as and for the purpose specified.

2. The combination,with an oscillatory-shuttle-carrier drivel', of a gimbal-ring, mounted in bearings therein and having an annular race sunk into the working face thereof, a series of balls arranged in said annular race, a shaft passing through the opening in the gimbal-ring, a collar-fast to the shaft-having an inclined driving-face thereon substantially parallel to, and in contact with, the balls in the race in the gimbal-ring, and means for driving the shaft, substantially as and for the purpose specified.

3. The combination,with an oscillatory-shuttle-carrier driver mounted on a pivot terminating at its lower end in bifurcations having transverse bearings therein, of a gimbal-ring, mounted in the transverse bearings in the shuttle-carrier driver and having an annular race sunk into the working face thereof, a circular row of balls arranged in said race, a shaft passing through the opening in the gimbal-ring, a collarfast to the shaft-having 35 an inclined driving-face thereon substantially parallel to and contacting the row of balls in the race in the gimbal-ring, and means for driving the shaft, substantially as and for the purpose specified.

4. In a sewing-machine, in combination, a base plate, an oscillatoryshuttle carrier driver mounted on a pivot on the" base-plate provided, at its upper end, with a transversely-projecting arm to support a shuttlecarrier, and terminating, at its lower end, in bifurcations having transverse bearings therein, a gimbal-ring, mounted in the transverse bearings in the shuttle-carrier driver and having an annular race sunk into the working face thereof, a circular row of balls arranged in saidrace, a shaft passing through the gimbalring, a collar-fast to the shafthaving an inclined driving-face thereon substantially parallel to and in contact with the row of balls in the race in the gimbal-ring, and a shuttle-carrier secured to the transversely-projecting arm on the shuttle-carrier driver, substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM C. FREE.

Witnesses p u RICHARD F. LooKE, NELLIE BUNKER. 

